Breast PET Feasibility (Breast PET)

March 23, 2020 updated by: University College, London

Role of Dedicated Breast PET in the Characterisation of Indeterminate Breast Lesions on MRI Requiring a Second-look Ultrasound - a Feasibility Study

Breast PET may be able to help in the diagnostic pathway in patients to determine which ones need to go on to have a second look ultrasound +/- biopsy and those who need to be sent for MRI guided biopsy. This may reduce the need to create more anxiety and uncertainty in this group of patients, already extremely stressed by the recent diagnosis of breast cancer.This study involves a single trial visit the Royal Free Hospital for imaging. Participants will need to lie flat for up to 30 minutes on the PET-CT camera and up to 30 minutes on the MAMMI. They will be advised not to take part in this study if they are unable to lie flat on their back and their front for this length of time or if they are claustrophobic. They will be offered the opportunity to see the PET-CT scanner and the MAMMI before deciding to consent to the trial.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study involves a single trial visit the Royal Free Hospital for imaging. Participants will need to lie flat for up to 30 minutes on the PET-CT camera and up to 30 minutes on the MAMMI. They will be advised not to take part in this study if they are unable to lie flat on their back and their front for this length of time or if they are claustrophobic. They will be offered the opportunity to see the PET-CT scanner and the MAMMI before deciding to consent to the trial.

Participants will be exposed to a radiation dose from the radioactive tracer F-18 FDG that is injected into the vein before the scan and from the CT exposures during the scan. The dose associated with the injection of about 3 MBq/kg of F-18 FDG is in the range of 4-7mSv. A CT will be performed over the thorax to allow attenuation correction of PET images and localisation of tracer uptake. The dose from the thorax CT will be patient dependent but the mean dose to a patient undergoing this type of scan is 2.1mSv. A whole body CT will be performed from the base of the skull to mid-thigh to plan the bed positions for the whole body emission scan and to allow attenuation correction of PET images and localisation of tracer uptake. The dose from the whole body CT will be patient dependent but the mean dose to a patient undergoing this type of scan is 5.2mSv.The total radiation dose participants will be exposed to is in the range of 11.3-14.3mSv. This is equivalent to 4-5.3 years of background radiation to which individuals in the UK are regularly exposed. This would amount to an increased lifetime risk of cancer of approximately 1 in 1250 in a standard population. These risks are compared to a normal lifetime risk of cancer of 1 in 3.

The half-life of F-18 is 110 minutes. The duration of the scan will be up to 120 minutes post injection. The activity within the patient will have reduced by more than 50% through radioactive decay alone by the time they leave the department and will be further reduced by excretion in urine. As with standard clinical administration of F-18, patients will not need to follow any special restrictions once leaving the department.

The CT scanning protocols used in the trial PET-CT are the standard clinical protocols used in the nuclear medicine department and have been developed with a view to minimising the dose to the patient as far as possible. All women of childbearing potential will undergo a pregnancy test on the day of the scan before the injection of the radioactive tracer in order to rule out any risk to a potential foetus. Any woman of childbearing potential who is found to be pregnant or will not consent to a pregnancy test will be excluded from the trial.

Very rarely, individuals may develop an allergic reaction to the PET tracer. No serious adverse reactions to this tracer have been reported. Patients may experience some discomfort from having a needle inserted into their arm/hand in order to have the tracer injected. Occasionally the vein may become inflamed or infected, or they may experience bruising at the insertion site. All efforts will be made to avoid or minimise any discomfort or other adverse effects from these procedures.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
12

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  1. Female
  2. Age over 18 (no upper limit).
  3. Not pregnant.
  4. Not breastfeeding.
  5. Indeterminate breast lesion on MRI requiring a second-look ultrasound.
  6. Ability to lie still for up to 30 minutes prone and supine.
  7. Females of childbearing potential have a negative pregnancy test within 7 days prior to being registered. Participants are considered not of child bearing potential if they are surgically sterile (i.e. they have undergone a hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) or they are postmenopausal.
  8. Willing and able to provide written informed consent.

Exclusion Criteria:

  1. Females who are pregnant, planning pregnancy or breastfeeding
  2. Concurrent and/or recent involvement in other research that is likely to interfere with the intervention within 3 months prior to study enrolment
  3. Inability to lie flat or undergo the tests.
  4. Any co-morbidities or conditions which in the opinion of the clinical team means that the patient should be excluded.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Health Services Research
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Breast PET
PET imaging of breast with patient in prone position.
Procedure: F-18 FDG breast PET scan
Other Names:
  • MAMMI

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Recruitment rate
Time Frame: Two years.
To assess the feasibility and acceptability to patients of F-18 FDG breast PET scans, by determining how many patients can be recruited over two years.
Two years.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Comparison with standard-of-care assessments
Time Frame: Two weeks
To compare results of breast PET to ultrasound, breast MRI and pathology
Two weeks
Eligibility barriers to recruitment
Time Frame: Two years.
To determine which eligibility criteria are barriers to recruitment of patients to a study of F-18 FDG breast PET scans.
Two years.
Comparison with whole-body PET
Time Frame: Two weeks
To compare the results obtained from F-18 FDG PET CT and breast PET scans
Two weeks
Sample size calculation
Time Frame: Two years.
To estimate outcome standard deviations to inform sample size calculations for a definitive trial.
Two years.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University College, London

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Royal Free Hospital NHS Foundation Trust

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Thomas Wagner, Royal Free Hospital NHS Foundation Trust

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 5, 2016

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 4, 2019

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 4, 2019

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 16, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 21, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 26, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 24, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 23, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 9702 Breast PET Feasibility
  • 16/LO/0507 (Other Identifier: NHS Health Research Authority)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

All requests for data sharing will adhere to the UCL Surgical & Interventional Trials Unit (SITU) data sharing agreement policy. UCL Medical School is supportive of data sharing and will endeavour to assist in requests for data sharing. These data will be held on secure servers and will not be released to any third parties until all the main outputs from the studies have been published. All requests for access to the data will be formally requested through the use of a SITU data request form which will state the purpose, analysis and publication plans together with the named collaborators. All requests are dealt with on a case by case basis by SITU and the Chief Investigator. All requests will be logged and those successful will have a data transfer agreement which will specify appropriate acknowledgement of the Chief Investigator and study group, the sponsor, and funders.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

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Locations

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